Hello - we did a massive renovation of our kitchen (and the whole house!) last year.
We bought our units from Howdens - 'Tewkesbury Stone' they are called they are a painted solid wood and I love it! I thoroughly recommend Howdens - excellent quality. With them you have to hire your own tradesman (a carpenter or kitchen fitter) as Howdens only sell to trade but this is a much more cost effective way to do it compared to somewhere like Magnet who 'project manage' it all for you but at a premium. Howdens do however send you a kitchen designer and this worked well. I told her I really wanted a Rangemaster, an American fridge freezer and an island and the kitchen was designed around these things. I had 'up and over' cupboards for the FF so it didn't stick out or look too big. I'd be wary of cupboards with ought handles just because of the whole fingerprints thing! Ditto with gloss suits they show a lot of marks (we have some in our bathroom). If it's not your 'forever house' then gloss units are a very cost effective way to re-do your kitchen but if it's for long term is recommend solid wood if budget allows :)
Got my appliances from bootskitchenappliances.com - they are run by ao.com so same service/products but you get TONS of boots advantage card points. Got a Rangemaster double oven, integrated washing machine and dishwasher (Neff) and American style fridge freezer and integrated microwave - both Samsung. I love all my appliances except the microwave which I bought because I really wanted an integrated one. It was really expensive (because it also performs as an oven which we don't need). I could have actually just had a gap left for a normal microwave and I think it would have looked fine. We shopped around in stores and online before making our choices - I'd advise you to avoid SMEG - they look gorgeous but seem to have terrible reviews!
We got solid oak worktops which I really regret as although I am almost obsessive about wiping up every drop of water that gets on them, they mark so easily and around the sink is a bit of a state already. It does look good though in areas where water doesn't get to so you could go for a half and half.
One of my favourite things in my kitchen is my splashback we got it online and was SO nervous about it but it looks gorgeous and people always comment on it. We have black metro tiles and black appliances so it really pops:
www.diysplashbacks.co.uk/printed-glass-splashbacks/nature-splashbacks.aspx
My other favourite thing is my island:) I've always wanted one and it's so great - I really recommend that or a peninsula if you have the room as it gives you space to work without clutter - ensure there are sockets to hand (you can have pop up ones if you need to).
Flooring we eventually settled on a vinyl that looks like an oak floor. (People tend to think it's real wood as it has a 'grain'). It's extremely hard wearing and doesn't show marks. A word of warning: we went into a carpetright and got shown ones that had a really thick spongy backing to make it seem luxurious- this is actually completely impractical as if you were to put chairs on it (or anything else) it will leave an imprint. What you want is something with a thick top layer (it's like a hard plastic coating) that protects from scratches, tears and indents. We actually got ours from an independent carpet guy in the end.
Wow I've rambled on a bit!! Hope that's useful to you :)